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Re: Array comparison [message #32343 is a reply to message #32342]

Wed, 02 October 2002 07:53

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Sean Raffuse (sean@me.wustl.edu) writes:

> That is indeed true. Actually, I'm not interested in anything but whether
> or not an intersection exists. Neither the values nor the indices are
> important.
>
> I am not doing this on very large arrays. However, I may be doing it many,
> many times.

I've always found the set intersection, union, and difference
routines on my web page useful for these kinds of operations.
I've modified them some to do better error checking, etc.,
but this only takes a couple of seconds.

http://www.dfanning.com/tips/set_operations.html

Cheers,

David
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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[Message index]

		Re: Array comparison By: mchinand on Wed, 02 October 2002 13:44
		Re: Array comparison By: Jeff Guerber on Wed, 02 October 2002 12:04
		Re: Array comparison By: Craig Markwardt on Wed, 02 October 2002 08:12
		Re: Array comparison By: R.Bauer on Wed, 02 October 2002 08:09
		Re: Array comparison By: David Fanning on Wed, 02 October 2002 07:53
		Re: Array comparison By: Sean Raffuse on Wed, 02 October 2002 07:34
		Re: Array comparison By: Craig Markwardt on Wed, 02 October 2002 06:19
		Re: Array comparison By: R.Bauer on Wed, 02 October 2002 01:11
		Re: Array comparison By: Craig Markwardt on Tue, 01 October 2002 19:59
		Re: Array comparison By: mchinand on Tue, 01 October 2002 17:07

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